Radio antenna



Oct. 2.8', 1,930. M. l-". .musi-lamas ET AL 1,779,437

RADIO ANTENNA Firgd'auly 29. 192s liled December Patented Cet. 28, 1930 UNITED STATES PATENT OFFICE MATTHEW LOUGHRIDGE, OF BOGOTA,

NEW JERSEY, AND JOHN S. HOLLIDAY,

DECEASEE, LATE OF YORK, N. Y., BY JENNIE MARGARET HOLLIDAY, ADMIN- ISTRATRIX, OF VILKINSBURG, PENNSYLVANIA RADIO ANTENNA Application flied :ruiy 29,

This invention relates to radio antennae of the loop type and has for an object to provide a loop antenna which is collapsible, which is built in the form of a folding iframe with the antenna wires supported by the arms of the frame, which encloses the wires when folded and which provides a' spacer between the wires on each of the arms when folded. Other objects ot the invention will be understood from the following specihcation and the accompanying drawings, in which, Fig. l, is an elevation of a loop antenna constructed according` to this invention expanded ready for use, Fig. 2 isan elevation showing the antenna partially folded, Fig. 3 is a section showing the relation of the'supporting arms when folded, F ig. 4 is a cross-section ol the antenna. in the folded position, Fig. 5 is a detail showing one method of latching the arms in the folded position and Fig. 6 is a detail showing the method of latching the arms in the open position. i

This invention is disclosed in part in our co-pending application, Serial No. 525,917, 80, 1921 foi' radio apparatus.

in the application 'of loop antennae for radio apparatus, it is well known that the eihciency of this typeV of antenna increases with its size, the ,length of the parallel arms etc. A large antenna is inconvenient to handle and generally unsightly and considerable advantage arises from the use of a collapsible antenna which can be folded into small space when not in use andcan be expanded into comparatively large dimensions for receiving purposes. Such anantenna may be incorporated into an article ot' furniture as in the lamp stand here shown, or may be built to 4fold within a receiving set when not in use.

' his invention provides for maintaining the wires taut during the process of folding and unfolding so that they cannot become entangled; `provides a backing lfor each row of A wires and provides a separator between each row ot' wires when the antenna is folded.

The present invention comprises a plurality of pivoted arms arranged to enp'andfand fold so that when expanded a completerectangle is formed and when collapsed'the device is condensed to the combined width of the i926. serial No. 125,816.

arms and the length of the longest arm. A row of flexible wires are secured by cleats to the arms and lead around the pivoted joints of the arms so that these wires are maintained substantially taut by the arms during the operation 'of folding and unfolding. Certain of the arms are provided with side bars which project beyond the plane of the wires and thus protects and conceals the wires.

Referring to the drawings, ll is the base upon which the perpendicular stand l2 is erected having the slide bar 2l in the centre and supporting the wire frame 2T et the lamp shade as shown and the lamp bulbs Q8. On top of the stand or pedestal l2 the loud speaker unit 2O is placed which operates the cone type of reproducer 24. Above this reproducer is placed the inverted cone on the fixed supports 2G and around the annular between the cones a band of silk corresponding to the shade of the lamp may be pro-vided to produce iinished appearance. The surface of the lined cone 3() rellects the sound horizontally from the device in an annular band. yi`his suritace may be silvered so that if the r'epioducer 2dr is transparent or it' provision is made for the light -from the bulbs to reach this reflector it will be reliected in a halo around the-top of the lamp.

The folding frame supporting the antenna comprises the boards 66 and 67 and the arms 68, (i9, 70 and 71. rlhe boards are pivoted at e() to the armsand the arms 68 and 69 are pivoted at h to the slide 35a, also, the arms 70 and 7l are pivoted to the slide 85 at 40C as shown. lfhen the slide is lowered and the slide 35? raised the arms are brought to the horizontal position and the frame forms a rectangle. l,Viren these slides are moved in the opposite direction towards the centre 'of the stand as indicated in Fig. 2, the arms are brought together and the sides 66-67 are moved towards the centre to complete the pedestal which encloses the frame when it is collapsed. v Y

lil/Then closed, the latch 77 lon arm 68 and 77,6 on arm 69 stand in the relation shown in Fig. and the latching piece 78 may be provided and operated by a. handle from the outside ol' the pedestal to engage the ends of the opening ported by :the base to arin atTl, and through the post 73v pivoted to arm 7l at 75.` rlhese posts fold by the cleats on the arms.

` separated latches and hold the trame in the closed position. The Jframe is latched in the open position as indicated in Figs. l and 6 by the spring latch 62 engaging the slide 35 and the spring latch 62av engaging the slide 35a. These-spring latches are secured to the sides of the pedestal.r When expanded as shown in l,r the weight of the ftr'ameis sup- 11 through the .post 72 pivoted against the in Fig. 2. 'The antennaiwirespare supported on the tramev as indicated at 5l and are secured in place by cleats 57. These wires'are preferably strandedand flexible andare held taut The wires pass between the horizontal arms over the slides as indicatediin Fig. G. PerforatedY cleats 6l are provided, secured to the slides through which the wires are directed and kept in place. T he rod 2l Jforms a guide for the slidesin the pedestal and insures'the easy andunitorm operation of the device. AA stop 7 9is providedon this rod to limit the movements ot the slides.

arms when collapsed as indicated The horizontal arms are preferably con-- structed of a board or trame having side bars, as at 68 and 69, Fig. 4 which are wider than the frame and thusV torni aV channel for the wires whichfare cleated in place as indicated at 57, These bars form a channel on both sides of the trame 68a and-b9a and the outer channel is occupied by the wires on the vertical sides 66 and 67. Thus, as shown in Fig.

5, the antenna wires lsupported by 67 are from the antenna wires 5la supported by 68a." The space for the antenna wires between the arms is indicated in the vertical section in Fig. 3. By this arrangement it is impossible for the antenna wires to become entangled during the processot' foldingv and unfolding. The pedestal is formed of side boards 22 land 23 and is closed or completed by the boards 66-67 ot the trame so that when folded a complete box like pedestal is formed with all th'e'mechanism and wires concealed and protected and an Vattractivestand is produced which can be ornainented as an article of furniture.

Attention is called to the fact that the an- Yteniia wires are supported on the inside of the vertical sides Gti-67 ofthe frame and are support-edi on the outside of the arms v68, 69,

70 and ,7l so that when collapsed the wires are separated by the body ot the arms.Y

The lamp structure, of course, is not essen-V tial to the antenna or its operation and which may be constructedas here shown independent-ly ofthe lamp,

claim trame on four sideswhen collapsed.

ing trame having varms pivotally connected to said sides at the folding :trame having a pair of parallel sides,

arms pivotally connected tosaid sides at the corners. and hinged intermediate said sides so asto collapse between said sides, a guide for said arms and antenna Wires supported V by saidsides and said arms.

3. collapsible antenna comprising a folding traine having a pair of parallel sides and a vertical slide, arinspivotally connected 4to said sidesat the corners andpivotally consaid sides said sides saidl sides nected to said V'slide' intermediate and arranged to collapse between and antennaV wires supported, by and said arms.

4. A collapsible antenna comprising a multiple sided 'frame with pivotally connected members and antenna Wires' supported by said members land arranged to collapse by folding said members together and provide a spacer between the wires on each of the members when folded. i v 5. A collapsible antenna comprising a folding form and collapsible sothat themembers of each side of the frame aretolded together, antenna Wiressupported by the members of` said frame and meansffor latcliing said frame in position. Y

^ 6. A collapsible antenna comprising a multiple sided trame with pivotally connected members and antenna wires supported by said members, alternately, on the inside of one member and on the outside of the adjacent memberand arranged to collapse with the antenna Vwire enclosed'by folding said inem-V bers together. f y 7. A collapsible antenna comprisinga mul-V tiplesided frame with pivotally connectedV Vmembers arranged to fold together, said members formed ina channel and antenna wires secured in said channel. f 8. A collapsible antenna comprising a folding frame having a pair of parallelsides, arms pivotally connected to saidsides atthe corners Vand hinged intermediate saidfsides so as to collapse between said sides, antenna wires supported by saidsides'and saidV arms and means including said Vsides enclosing said 9. A collapsible antenna'comprisinga tolda pair of parallelfsides,

corners and hinged intermediate said sides so as tocollapse,betweensaid sides and antenna wires supported bysaid sides and said Having thus described our invention, we

arms, said antenna wiresfbeing' enclosed by .said sides.

VV10. A collapsible Vantenna comprising'V a frame :expandible into `a rectangular folding frame having a pair ofparallel sides,

arms pivotally corners and pivotally connected to sald sides at the connected intermediate Signed at of July, 192

New York, N. Y., this 16th day 6 MATTHEW H. LGUGHRIDGE. Signed at Wlkinsburg, Pa., this 20th day of July, 1926.

JOHN S. HOLLIDAY, Deceased,

By J. Margaret Ho 

